Abstract
We show that the three degenerate modes of family q=2 in a laser with high cylindrical symmetry produce a rotating pattern in which frequency degeneracy is removed. The rotation frequency is determined by the nonlinear interaction with the atomic medium. This is an example of the antifrequency locking phenomenon typical of class-B lasers. The measured rotation frequencies for different values of the discharge current agree well with theoretical predictions.
DOI:https://doi.org/10.1103/PhysRevA.55.738
©1997 American Physical Society